• Store new EZ-Check values by pressing the EZ-Dial knob
• Uses a standard 9V Alkaline Battery
• Superior battery life of 45 hours under typical continuous usage
• Easy access to battery compartment
• Lightweight, Rugged and Reliable
• Small, tough and protected to 60V

The Practical Instrument Electronics' Model 541 is the best tool for calibration, test, and diagnosing turbine meters, frequency counters, vibration systems, tachometers, vortex shedders, integrators, and any other Frequency devices in the shop, plant and/or field. The Model 541 brings all the features you would expect from a frequency calibrator and time saving new ones.

The model 541 comes with an LED indicator showing gate time for easy trigger level adjustment. Make adjustments with the EZ-Dial Knob or test limits with the dual action EZ-Check Switch. Save hours of troubleshooting time on problems when compared to other calibration methods. When calibrating a totalizer, the model 541 eliminates the need of a stop watch. This calibrator will automatically stop when the selected number of pulses has been sent to the totalizer.
 

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Advantages of the PIE 541 Frequency Calibrator over the Altek 941/942 Frequency Calibrator

• Easier to set up
  Easy push button menu instead of turning the calibrator off and back on to change settings
• Simpler and easier battery changes
  Single 9V battery vs. 6 AA batteries.  Auto off feature saves battery life
• Smaller & lighter
  Pocket sized and easier to carry
• Calibrate optical pickups
  LED flashes in sync with frequency output.  LED also flashes in sync with reading for fast adjustment of trigger level.